their bodies — for example, by clapping—to using objects to create music from sounds, musical instruments were born. Primitive instruments were probably designed to emulate natural sounds, and their purpose was ritual rather than entertainment. The concept of melody and the artistic pursuit of musical composition were probably unknown to early players of musical instruments. A person sounding a bone flute to signal the start of a hunt does so without thought of the modern notion of "making music". Musical instruments are constructed in a broad array of styles and shapes, using many different materials. Early musical instruments were made from "found objects" such as shells and plant parts. As instruments evolved, so did the selection and quality of materials. Virtually every material in nature has been used by at least one culture to make musical instruments. One plays a musical instrument by interacting with it in some way — for example, by plucking the strings on a string instrument, striking the surface of a drum, or blowing into an animal horn. Archaeology Researchers have discovered archaeological evidence of musical instruments in many parts of the world. Some artifacts have been dated to 67,000 years old, while critics often dispute the findings. Consensus solidifying about artifacts dated back to around 37,000 years old and later. Artifacts made from durable materials, or constructed using durable methods, have been found to survive. As such, the specimens found cannot be irrefutably placed as the earliest musical instruments. In July 1995, Slovenian archaeologist Ivan Turk discovered a bone carving in the northwest region of Slovenia. The carving, named the Divje Babe Flute, features four holes that Canadian musicologist Bob Fink determined could have been used to play four notes of a diatonic scale. Researchers estimate the flute's age at between 43,400 and 67,000 years old, making it the oldest known musical instrument and the only musical instrument associated with Neanderthal culture. However, some archaeologists and ethnomusicologists dispute the flute's status as a musical instrument. German archaeologists have found mammoth bone and swan bone flutes dating back to 30,000 to 37,000 years old in the Swabian Alps. The flutes were made in the Upper Paleolithic age, and are more commonly accepted as being the oldest known musical instruments. Archaeological evidence of musical instruments was discovered in excavations at the Royal Cemetery in the Sumerian city of Ur. These instruments, one of the first ensembles of